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Impurity Reference Standards

Pharmacopoeial impurities, nitrosamines, metabolites, labelled internal standards and API working standards, each backed by analytical data for method development and QC.

20,060 products6 categories2,050 in stockCOA + SDS with every lot

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Diethyl 4'-chloro-5-methyl-3-oxo-1,2,3,6-tetrahydro-[1,1'-biphenyl]-2,6-dicarboxylate

CAS: 1053068-98-6
Formula: C₁₉H₂₁ClO₅
MW: 364.8 g/mol

ZX-028193

Diethyl 8-hydroxy-2,2,14,14-tetramethylpentadecanedioate

CAS: 738606-64-9
Formula: C₂₃H₄₄O₅
MW: 400.6 g/mol

ZX-019972

Diethyl amine D10 Hydrochloride

CAS: 285132-87-8
Formula: C₄H₁₂ClN
MW: 119.66 g/mol

ZX-046409

Diethyl Diallylmalonate

CAS: 3195-24-2
Formula: C₁₃H₂₀O₄
MW: 240.29 g/mol

ZX-031386

Diethyl Malonate-13C2

CAS: 77386-82-4
Formula: C₇H₁₂O₄
MW: 162.15 g/mol

ZX-043155

Diethyl malonate-d2

CAS: 4303-49-5
Formula: C₇H₁₂O₄
MW: 162.18 g/mol

ZX-046799

Diethyl Oxalate-13C2

CAS: 150992-84-0
Formula: C₆H₁₀O₄
MW: 148.13 g/mol

ZX-036538

Diethyl-(2-hydroxyimino)malonate

CAS: 6829-41-0
Formula: C₇H₁₁NO₅
MW: 189.17 g/mol

ZX-040690

Diethyl-2-propylimidazole-4,5-dicarboxylate

CAS: 144689-94-1
Formula: C₁₂H₁₈N₂O₄
MW: 254.28 g/mol

ZX-025913

Diethyl-D10-Amine

CAS: 120092-66-2
Formula: C₄H₁₁N
MW: 83.2 g/mol

ZX-035871

Diethylamine Dinitroso Impurity

CAS: 13256-12-7
Formula: C₄H₁₀N₄O₂
MW: 146.15 g/mol

ZX-006097

Diethylamine salicylate

CAS: 4419-92-5
Formula: C₁₁H₁₇NO₃
MW: 211.26 g/mol

ZX-036154

Diethylaminosulfur Trifluoride

CAS: 38078-09-0
Formula: C₄H₁₀F₃NS
MW: 161.19 g/mol

ZX-006098

Diethylcarbamazine

CAS: 90-89-1
Formula: C₁₀H₂₁N₃O
MW: 199.29 g/mol

ZX-033309

Diethylcarbamazine Citrate

CAS: 1642-54-2
Formula: C₁₆H₂₉N₃O₈
MW: 391.42 g/mol

ZX-028984

Diethylene Glycol Bisphthalate

CAS: 13988-26-6
Formula: C₁₂H₁₂O₅
MW: 236.22 g/mol

ZX-031076

Diethylene Glycol Di(p-toluenesulfonate)

CAS: 7460-82-4
Formula: C₁₈H₂₂O₇S₂
MW: 414.5 g/mol

ZX-033604

Diethylene Glycol-d8

CAS: 102867-56-1
Formula: C₄H₁₀O₃
MW: 114.17 g/mol

ZX-044287

Diethylglycine

CAS: 1606-01-5
Formula: C₆H₁₃NO₂
MW: 131.17 g/mol

ZX-035839

Diethylstilbestrol (mixture of isomers)

CAS: 6898-97-1
Formula: C₁₈H₂₀O₂
MW: 268.3 g/mol

ZX-043157

Diethylstilbestrol Dimethyl ether

CAS: 7773-34-4
Formula: C₂₀H₂₄O₂
MW: 296.4 g/mol

ZX-024277

Diethylstilbestrol Monomethyl Ether

CAS: 7773-60-6
Formula: C₁₉H₂₂O₂
MW: 282.4 g/mol

ZX-024278

Diethyltoluamide

CAS: 134-62-3
Formula: C₁₂H₁₇NO
MW: 191.27 g/mol

ZX-028985

Diethyltoluamide Related Compound A (N,N-Diethyl-4-toluamide) (1197018)

CAS: 2728-05-4
Formula: C₁₂H₁₇NO
MW: 191.27 g/mol

ZX-033310

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